From: "Suraj N. Kurapati" <sunaku@...>
Date: 2008-03-31T06:46:18+09:00
Subject: Re: C extension - how to print exception like Ruby?

Suraj N. Kurapati wrote:
>       rb_eval_string_protect( // <====== output is not beautiful
>           "if (e = $!) then STDERR.puts"
>           "(e.inspect, e.backtrace) end",
>           &error
>       );

Here is a more accurate mimicry of Ruby's internal exception
printing logic:

rb_eval_string_protect("if (e = $!) then STDERR.puts(\"#{e.class}:
#{e.message}\", e.backtrace.map {|s| \"\tfrom #{s}\" }) end", &error);

Nevertheless, it would be nice if Exception#inspect() produced this
output or if the Ruby C API provided a function to dump the details
of an exception just like Ruby does internally.